Chiffchaff
(Phylloscopus collybita)
The
Chiffchaff is a summer visiting warbler though records of
over-wintering birds are becoming more common. It is hard
to distinguish from the Willow Warbler by sight but easy
from its song: chiff chaff chiff chaff.... It has
black legs compared to the paler brown legs of the Willow
Warbler.